So it was, when they had come to Samaria, that Elisha said, "LORD, open the eyes of these men, that they may see." And the LORD opened their eyes, and they saw; and there they were, inside Samaria!
2 Kings 6:20
Surrounding context
6:19 Now Elisha said to them, "This is not the way, nor is this the city. Follow me, and I will bring you to the man whom you seek." But he led them to Samaria.
6:20 So it was, when they had come to Samaria, that Elisha said, "LORD, open the eyes of these men, that they may see." And the LORD opened their eyes, and they saw; and there they were, inside Samaria!
6:21 Now when the king of Israel saw them, he said to Elisha, "My father, shall I kill them? Shall I kill them?"